US2903670A - Plug terminal - Google Patents

Plug terminal Download PDF

Info

Publication number
US2903670A
US2903670A US418413A US41841354A US2903670A US 2903670 A US2903670 A US 2903670A US 418413 A US418413 A US 418413A US 41841354 A US41841354 A US 41841354A US 2903670 A US2903670 A US 2903670A
Authority
US
United States
Prior art keywords
plug
sleeve
receptacle
detent
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US418413A
Other languages
English (en)
Inventor
Gilbert C Sitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL95609D priority Critical patent/NL95609B/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US418413A priority patent/US2903670A/en
Priority to NL195709A priority patent/NL95609C/nl
Priority to FR1121249D priority patent/FR1121249A/fr
Priority to GB8305/55A priority patent/GB784912A/en
Priority to CH336106D priority patent/CH336106A/de
Priority to BE536775D priority patent/BE536775A/xx
Priority to DEA22334A priority patent/DE1014620B/de
Application granted granted Critical
Publication of US2903670A publication Critical patent/US2903670A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/28—Coupling parts carrying pins, blades or analogous contacts and secured only to wire or cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole

Definitions

  • This invention relates in general to plug contact assemblies and more particularly to plug conductor terminals of the snap-in lock type.
  • a metallic pin contact element In the conventional type of snap-in lock plug terminals, a metallic pin contact element, usually formed by machining or casting is secured to the end of a lead conductor and inserted and retained in a plug receiving receptacle by means of a wire spring detent and cooperating recess arrangement.
  • the recess takes the form of an annular groove on the pin element with the detent being a wire spring mounted in the sidewalls of the receptacle, although the reverse arrangement wherein the spring detent consists of a wire insert within the contact pin is also utilized.
  • Wire spring in the plug contact assembly has 'several disadvantages, among these being that the wire detent is particularly subject to distortion through accidental mishandling or abuse, yor through acquisition of a permanent set due -to continued use. Obviously, setting of the spring from its original character would impair or perhaps destroy its effectiveness to hold the plug terminal in place.
  • Plug terminals in the conventional form are generally restricted to metallic construction which obviously requires that the plug receptacle be of electrical insulating material even though a metallic structure may be preferred as where strength is a design factor.
  • the conventional plug terminal has the further disadvantage of not being wholly insertable in the receptacle, the exposed portion including the point at which the lead conductor is axed to the terminal.
  • it has been the practice in many instances to provide for the assembly some form of covering, usually being either a separate covering element placed over the assembly after connection, or a molded insulation surrounding the exposed portion of the plug terminal, which adds to the diiculty and expense of manufacture.
  • Another object of Ithe present invention is to provide a plug terminal having an improved snap-in lock arrangement in which the taking of a permanent set is immaterial.
  • a further object of the present invention is to provide a plug terminal in which the electrical connection between the lead wire and terminal is inherently protected by the arrangement of the plug elements.
  • Still another object is to provide a plug terminal adapted for use with plug receptacles of any material of construction.
  • Figure l is a fragmentary view in cross section of a typical form of plug receptacle for the purpose of illus- ⁇ trating the manner in which the plug terminal may be mounted therein;
  • Figure 2 is a fragmentary plan view of the plug recep-tacle.
  • Figure 3 is a view in cross section of the plug terminal.
  • FIG. l generally designated at ⁇ ll is a plug receptacle in which a plug terminal, generally ⁇ designated at 3, is inser-ted and thereby to be retained in electrical contact with a cooperating contact element, not shown, that may be an integral part of receptacle l or external thereto, the form of such contact element being immaterial.
  • plug 3 includes a pin contact nose 5 extending beyond the rear side of receptacle Il whereby to engage with an external contact element which may be of the form shown and described in my copending application, S.N. 411,969, filed February 23, 1954.
  • Receptacle 1 may be of any suitable material, either electrical conducting or nonconduoting, and typically is provided with a plug receiving aperture 2 into which projects a keeper or detent 4 that serves to retain plug terminal 3 in the receptacle in a manner to be described.
  • Detent 4 in the embodiment disclosed, is simply formed by providing a lip on the rear face of the receptacle which extends over a small segment of aperture 2 as shown in Figure 2.
  • plug 3 gener-ally includes a pin contact body 6 of any suitable conducting material, which is mounted in a sleeve 8 of insulating material, such as nylon or other suitable plastic material having sufficient resilience and exibility. It is contemplated that insulating sleeve S should substantially enclose pin Contact body 6 whereby upon insertion into the aperture 2 the engagement areas of receptacle 1 and plug 3 will be between sleeve S and the side Walls of aperture 2, the conductive Contact body 6 being fully insulated from receptacle I. Contact body 6, however, may be of sufficient length, as at pin 5, to project from the insertion end of sleeve 8 a sulicient distance to provide an external contact surface for the plug.
  • insulating sleeve S should substantially enclose pin Contact body 6 whereby upon insertion into the aperture 2 the engagement areas of receptacle 1 and plug 3 will be between sleeve S and the side Walls of aperture 2, the conductive Contact body 6 being fully insulated from receptacle
  • sleeve 8 may be directly molded over contact body 6, it is preferred that the elements be separately formed to facilitate automatic manufacture, sleeve 8 being separately molded and Contact body 6 being stamped from sheet metal stock and rolled into tubular form as shown in Figure 3.
  • a shank seciton 10 of contact body 6 is enlarged in diam-l eter to provide a shoulder 11 which cooperates with an annular stop shoulder l2 within sleeve 8 and serves to limit the insertion of contact body 6 within the sleeve.
  • Enlarged shank section l@ is provided with a flared end 14 which, by virtue of having a larger diameter than an internal annular bead 15 in the end of sleeve 8, snaps into a cooperating groove lo, after distending the end of sleeve 8 at bead l5, concomitant with shoulder 1l abutting shoulder l2. Bead l5, after contraction behind flared end i4, serves to retain contact body 6 within sleeve 8.
  • a stop shoulder i7 formed by enlarging the end section 18 of sleeve 8 defines the limit of insertion of the plug into aperture 2 by engaging the face of receptacle 1.
  • the plug is retained in the receptacle by means of an annular groove 2t) in the in insertion end of the sleeve 6, groove Z0 providing a recess for seating detent 4 coincident with shoulder 17 engaging the face of receptacle 1.
  • lt is contemplated, of course, that detent 4 shall extend sufliciently far into aperture 2 so as to prevent free passage of the plug therethrough.
  • sleeve 8 is relieved from contact body 6, as by enlarging at 2l the inner diameter thereof, whereby as the plug is inserted into the receptacle, sleeve 8 may yield under pressure from detent 4. After detent 4 seats in groove 20, the forward end of sleeve 8 snaps back into its original shape thereby to maintain the plug in position.
  • the forward edge of sleeve 8 may be inclined to form a ramp or camming surface Z2 to guide more efficiently detent 4 to groove 20.
  • the plug 3 constitutes the terminal of an electrical lead 23 which may be secured to contact body 6 by any suitable means. It is preferred, however, that the diameters of the insulated portion 24 and the stripped portion 25 of lead 23 be substantially the same as the diameters of enlarged shank 10 and nose 5, respectively, of contact body 6 which may thus be suitably crimped or swaged to lead 23, as by indentations 26, within that poriton of plug 3 which is received in recep-tacle l. As thus connected, when the plug is mounted in the receptacle the points at which contact body 6 are secured to lead 23 are within the body of the receptacle, and hence, are fully protected from external shock.
  • the multiple receptacle will take the form of a molded panel provided with apertures 2 and will be relatively rigid and unyielding.
  • Sleeve S of nylon or other suitable material, will be accurately molded to an external diameter itting within the interior surface defined by an aperture 2.
  • the inner surfaces within sleeve 3 will make a nice force iit with shank section l0 of the metal plug.
  • the nose of the plug will be cushioned coaxially, with the axis of aperture 2.
  • the parts may, therefore, be mass produced and yet each nose, when the assembly is complete, will be held by the nylon sleeve exactly where it should be with respect to its cooperating contact spring.
  • This enlarged diameter 21 serves, therefore, not only to provide the desired relief for detent 4 but also to inject a region of clearance for limited yielding movement of nose 5 when the plug is positioned in an aperture 2.
  • the nylon skirt at 2l backs up the shaft of the nose, however, when excessive force is applied to it and provides a rm reinforcement against further disalignment of the metal conductor within the dielectric sleeve.
  • a plug terminal for insertion in a plug receiving receptacle having a detent projecting therein comprising a contact member, a resilient sleeve fitted on said member, a recess in said sleeve for cooperating with the detent to retain said terminal in the receptacle, the forward end of said sleeve from said recess being spatially disposed and longitudinally fixed relative to said member for yieldably impeding movement of said recess into and out of coop eration with the detent for yieldably securing said terminal in the receptacle.
  • a plug terminal for insertion in a plug receiving receptacle having a detent projecting therein comprising a contact pin, a resilient sleeve fitted on said pin, the insertion end of said sleeve being relieved from and longitudinally xed relative to Said pin and having an inclined edge, an annular groove in said end adjacent said inclined edge for cooperating with the detent to maintain said terminal in the receptacle, said inclined edge engaging and snapping under the detent upon the seating of the detent in said groove during insertion of said terminal in the receptacle.
  • a plug terminal for insertion in a plug receiving receptacle having a detent projecting therein comprising a tubular contact member including a pin contact portion and an enlarged shank portion having a flared end, said portions forming a stop shoulder at the junction therebetween, a resilient insulating sleeve having first and second opposed internal annular shoulders for cooperating with said stop shoulder and said flared end respectively to retain said sleeve on said member, the inside diameter of said sleeve at said second shoulder being less than the diameter of said flared end so that upon assembly of said sleeve on said member said iirst shoulder abuts said stop shoulder as said flared end snaps under and into engagement with said second shoulder, the forward end of said sleeve being yieldably dispose-d relative to said member, an annular groove in said forward end for cooperating with the detent to maintain said terminal in the receptacle, said forward end being arranged to snap under the detent upon the seating thereof in said groove when said terminal is inserted
  • a plug terminal for insertion in a plug receiving receptacle having a detent projecting therein comprising a contact member, a resilient sleeve secured on said member, the forward end portion of said sleeve being yieldably disposed relative to said member and constrained to Hex primarily about axes of flexure parallel to the longitudinal axis of said plug terminal, the end of said sleeve being inclined to p-rovide an annular ramp engaged by the detent upon insertion of said terminal into the receptacle, the external diameter of said sleeve behind said ramp being reduced for receiving the detent upon forcing said ramp past the detent, said sleeve having lateral means on said sleeve for stopping insertion of the terminal within the receptacle upon movement of said ramp past said detent.
  • a body member having a passageway therein, a plug disposed in said passageway including a contact element and a resilient member secured on said element, the forward end of said resilient member defining a ramp and being reduced in section immediately behind said ramp to define a shoulder, said forward end being spatially disposed relative to said contact element, a detent projecting from said body member and intersecting said passageway and cooperating with said shoulder for impeding movement of said plug thereby, the plug periphery at the high point of said ramp closely matching the conguration of said passageway for Aconstraining said resilient member to flex abofut axes of ilexure parallel to the longitudinal aXis of said plug upon the ramp passing under said detent.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US418413A 1954-03-24 1954-03-24 Plug terminal Expired - Lifetime US2903670A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL95609D NL95609B (xx) 1954-03-24
US418413A US2903670A (en) 1954-03-24 1954-03-24 Plug terminal
NL195709A NL95609C (nl) 1954-03-24 1955-03-18 Stopcontact met grendelwerking
GB8305/55A GB784912A (en) 1954-03-24 1955-03-22 Improvements in or relating to electrical plug terminals
FR1121249D FR1121249A (fr) 1954-03-24 1955-03-22 Borne à fiche
CH336106D CH336106A (de) 1954-03-24 1955-03-24 Elektrischer Stecker und dessen Verwendung
BE536775D BE536775A (xx) 1954-03-24 1955-03-24
DEA22334A DE1014620B (de) 1954-03-24 1955-03-24 Elektrischer Stecker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US418413A US2903670A (en) 1954-03-24 1954-03-24 Plug terminal

Publications (1)

Publication Number Publication Date
US2903670A true US2903670A (en) 1959-09-08

Family

ID=23658021

Family Applications (1)

Application Number Title Priority Date Filing Date
US418413A Expired - Lifetime US2903670A (en) 1954-03-24 1954-03-24 Plug terminal

Country Status (7)

Country Link
US (1) US2903670A (xx)
BE (1) BE536775A (xx)
CH (1) CH336106A (xx)
DE (1) DE1014620B (xx)
FR (1) FR1121249A (xx)
GB (1) GB784912A (xx)
NL (2) NL95609C (xx)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104925A (en) * 1962-01-16 1963-09-24 Nat Connector Corp Electrical connector assembly
US3116960A (en) * 1959-08-03 1964-01-07 Malco Mfg Co Electrical socket
US3125395A (en) * 1959-04-24 1964-03-17 Electrical connector
US3134633A (en) * 1962-03-14 1964-05-26 Amp Inc Plug contactor
DE1172337B (de) * 1960-04-15 1964-06-18 Deutsch Co Steckkontakteinrichtung fuer elektrische Kreise
US3173740A (en) * 1963-11-12 1965-03-16 Auto Swage Products Inc Self-locking electrical plug connector
US3206718A (en) * 1963-10-08 1965-09-14 Amp Inc Plug connector
US3208028A (en) * 1963-04-30 1965-09-21 Ind Electronic Hardware Corp Multilayer circuitry with interrupted lines
US3434137A (en) * 1967-09-14 1969-03-18 Amp Inc Housing for indicating lamp or other electrical components
US3781763A (en) * 1966-11-30 1973-12-25 Amp Domestic Inc Plugboard system
US4269472A (en) * 1979-10-26 1981-05-26 Amp Incorporated Electrical terminal
US4296990A (en) * 1980-02-22 1981-10-27 Virginia Panel Corporation Electrical connector having insulated locking shell for use on panel having metal ground plane
EP0181305A2 (en) * 1984-11-06 1986-05-14 Adc Telecommunications, Inc. Electrical connector apparatus
US6848942B1 (en) * 2000-01-12 2005-02-01 Molex Incorporated Connectors having supportive barrier components
CN100578862C (zh) * 2007-11-22 2010-01-06 林文镇 一种制作插头插脚的方法及其专用设备

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3028575A (en) * 1958-05-14 1962-04-03 Burndy Corp Removable control assembly for an electrical connector
NL239473A (xx) * 1958-05-29
US2979689A (en) * 1959-01-13 1961-04-11 Jackson Anton Element for detachably coupling electrical contacts with a connector body
US3028574A (en) * 1959-08-19 1962-04-03 Winchester Electronics Inc Electrical connector with resiliently mounted removable contacts
US3086074A (en) * 1961-02-13 1963-04-16 Malco Mfg Co Self-orientating terminal connectors
EP0128990A1 (fr) * 1983-06-21 1984-12-27 Cemrep Broche conductrice pour fiche de courant électrique
DE3446549A1 (de) * 1984-12-20 1986-06-26 Allied Corp., Morristown, N.J. Stecker oder steckdose
DE19613264A1 (de) * 1996-04-02 1997-10-09 Grote & Hartmann Kontaktelement

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142818A (en) * 1935-10-28 1939-01-03 Illinois Tool Works Electrical connecter
US2205146A (en) * 1937-12-08 1940-06-18 Nat Company Inc Radio and like socket
US2330948A (en) * 1942-04-10 1943-10-05 Ibm Plugboard
US2383909A (en) * 1942-11-14 1945-08-28 Aircraft Marine Prod Inc Electrical connector
US2469397A (en) * 1945-11-14 1949-05-10 Melvin E Mezek Electrical connector
US2689337A (en) * 1952-04-04 1954-09-14 Burtt Shaped metal contact
US2694798A (en) * 1950-04-10 1954-11-16 Frederick A Cole Resilient lamp socket mounting
US2695394A (en) * 1953-08-06 1954-11-23 Aircraft Marine Prod Inc Plug contactor
US2711522A (en) * 1954-09-27 1955-06-21 Miller Electric Co Electrical plug connector having means to mount it in an apertured panel
US2774810A (en) * 1951-08-21 1956-12-18 Aircraft Marine Prod Inc Electrical connector

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2142818A (en) * 1935-10-28 1939-01-03 Illinois Tool Works Electrical connecter
US2205146A (en) * 1937-12-08 1940-06-18 Nat Company Inc Radio and like socket
US2330948A (en) * 1942-04-10 1943-10-05 Ibm Plugboard
US2383909A (en) * 1942-11-14 1945-08-28 Aircraft Marine Prod Inc Electrical connector
US2469397A (en) * 1945-11-14 1949-05-10 Melvin E Mezek Electrical connector
US2694798A (en) * 1950-04-10 1954-11-16 Frederick A Cole Resilient lamp socket mounting
US2774810A (en) * 1951-08-21 1956-12-18 Aircraft Marine Prod Inc Electrical connector
US2689337A (en) * 1952-04-04 1954-09-14 Burtt Shaped metal contact
US2695394A (en) * 1953-08-06 1954-11-23 Aircraft Marine Prod Inc Plug contactor
US2711522A (en) * 1954-09-27 1955-06-21 Miller Electric Co Electrical plug connector having means to mount it in an apertured panel

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125395A (en) * 1959-04-24 1964-03-17 Electrical connector
US3116960A (en) * 1959-08-03 1964-01-07 Malco Mfg Co Electrical socket
DE1172337B (de) * 1960-04-15 1964-06-18 Deutsch Co Steckkontakteinrichtung fuer elektrische Kreise
US3104925A (en) * 1962-01-16 1963-09-24 Nat Connector Corp Electrical connector assembly
US3134633A (en) * 1962-03-14 1964-05-26 Amp Inc Plug contactor
US3208028A (en) * 1963-04-30 1965-09-21 Ind Electronic Hardware Corp Multilayer circuitry with interrupted lines
US3206718A (en) * 1963-10-08 1965-09-14 Amp Inc Plug connector
US3173740A (en) * 1963-11-12 1965-03-16 Auto Swage Products Inc Self-locking electrical plug connector
US3781763A (en) * 1966-11-30 1973-12-25 Amp Domestic Inc Plugboard system
US3434137A (en) * 1967-09-14 1969-03-18 Amp Inc Housing for indicating lamp or other electrical components
US4269472A (en) * 1979-10-26 1981-05-26 Amp Incorporated Electrical terminal
US4296990A (en) * 1980-02-22 1981-10-27 Virginia Panel Corporation Electrical connector having insulated locking shell for use on panel having metal ground plane
EP0181305A2 (en) * 1984-11-06 1986-05-14 Adc Telecommunications, Inc. Electrical connector apparatus
EP0181305A3 (en) * 1984-11-06 1988-01-13 Adc Telecommunications, Inc. Electrical connector apparatus electrical connector apparatus
US4759729A (en) * 1984-11-06 1988-07-26 Adc Telecommunications, Inc. Electrical connector apparatus
US6848942B1 (en) * 2000-01-12 2005-02-01 Molex Incorporated Connectors having supportive barrier components
CN100578862C (zh) * 2007-11-22 2010-01-06 林文镇 一种制作插头插脚的方法及其专用设备

Also Published As

Publication number Publication date
FR1121249A (fr) 1956-07-25
CH336106A (de) 1959-02-15
DE1014620B (de) 1957-08-29
GB784912A (en) 1957-10-16
NL95609C (nl) 1960-10-15
BE536775A (xx) 1955-09-24
NL95609B (xx)

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